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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2025 | Oct. 31, 2024
Income Tax Disclosure [Abstract] |  |  |  |
Provision (benefit) from income tax | $ 11,804 | $ 9,151 | $ 26,997 | $ (804,340)
Release of valuation allowance |  |  |  | $ 837,700
Unrecognized tax benefits | 86,200 |  | 86,200 |
Unrecognized tax benefits that would impact effective tax rate | $ 69,100 |  | $ 69,100 |

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